Watermark Authentication for Secure Data Aggregation in WSN Based on Secure Hash Algorithm and Node Identifier

Data integrity and authentication are an important security challenge in Wireless Sensor Networks (WSN). The main required in WSNs is to check the integrity of the received data at BS. We detected the malicious modifications of the data and also we detected the malicious sensor node. in this work, the delivering sensor information to the neighboring node was assured by the legitimate node and not altered by the attacker or for other reasons. In addition, we propose a method to verify the integrity of the sensor data, which is based on a fragile watermarking scheme (FWS). In watermarking, each sensor node embeds a unique watermark to sensor data and BS can verify the data integrity. Node Authentication is one of the important topics in WSNs. In this paper, there is three types of devices have been used in building monitoring and tracking system, these devices are an Ultrasonic sensor, Arduino Uno, NodeMCU esp2866 and RFID RC522.